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US 7,125,122 B2Granted
Projection system with corrective image transformation
AssigneeSharp Laboratories of America, Inc.
InventorsBaoxin Li, Shigeru Kojima, Toshinori Furuhashi, Kazuya Arakawa, Ryohichi Yonezawa
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Abstract
An image projection system that corrects an image to be projected onto a projection surface by sensing at least a portion of that surface, and based upon the sensed portion, determining and applying a corrective transformation to the image, after which the corrected image is projected onto the projection surface.
Claims4
A method for keystoning in a projector, comprising:
- (a) projecting an image from a lens of said projector;
- (b) using an imaging device to sense said image projected by said projector;
- (c) determining a transformation to adjust the keystoning of an image projected from said projector;
- (d) modifying said image projected from said projector based upon said transformation;
- (e) projecting said modified image from said projector, wherein said imaging device and said projector are within 5 inches of each other.
2 more elements
Dependencies are inferred from the claim text.